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BOSTON MARATHON 2025

Seok Woo Han

Bib: 13365•M

0:00
0:00
/ mi
Masters
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Overall
#0 / 28404
Gender (Male)
#0 / 16105
Masters (Masters Men)
#0 / 10463
Division (M50-54)
#0 / 1996
Race Day Weather
50°/40°F
broken clouds

⏱️ Race Timeline

Course Elevation
7–469 ft
≈
×2stacked redwood trees
•▲ 890 ft climb · ▼ 1342 ft descent
Ribbon color based on
FasterSteadySlower· vs. your average pace
Start
0:00
Race begins
5K· 3.11 mi
7:59/mi
24:48
↑ 97↓ 3451.5%
10K· 6.21 mi
7:47/mi
49:00
↑ 79↓ 1380.4%
15K· 9.32 mi
7:50/mi
1:13:19
↑ 67↓ 78
20K· 12.43 mi
8:10/mi
1:38:40
↑ 106↓ 860.1%
Half· 13.11 mi
7:56/mi
1:44:05
↑ 19↓ 370.5%
25K· 15.53 mi
8:26/mi
2:04:32
↑ 66↓ 880.2%
30K· 18.64 mi
9:16/mi
2:33:20
↑ 181↓ 1480.2%
20M
9:53/mi
2:46:46
↑ 64↓ 500.2%
21M
12:28/mi
2:59:14
↑ 106↓ 241.6%
35K· 21.75 mi
11:42/mi
3:07:59
↑ 17↓ 861.7%
23M
10:14/mi
3:20:48
↑ 23↓ 630.6%
24M
9:19/mi
3:30:07
↓ 821.3%
40K· 24.85 mi
9:09/mi
3:37:56
↓ 200.3%
25.2M
9:52/mi
3:41:20
↑ 13↓ 160.2%
Finish· 26.22 mi
9:23/mi
3:50:54
↑ 22↓ 21

The Course

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Half Splits

1st Half· via HalfFaster
Distance13.11 mi
Time1:44:05
Pace7:56 /mi
2nd Half
Distance13.11 mi
Time2:06:49
Pace9:40 /mi
📊Positive Split: 21.8% slower second half

Checkpoint Splits

CheckpointDistanceTime of DayTimeAvg PaceSegment TimeSegment PaceDiff
5K
3.11 mi11:20:1824:487:5924:48
7:59
-
10K
6.21 mi11:44:3049:007:5324:12
7:47
-0:12
15K
9.32 mi12:08:491:13:197:5224:19
7:50
+0:03
20K
12.43 mi12:34:101:38:407:5625:21
8:10
+0:20
Half
13.11 mi12:39:351:44:057:565:25
7:56
-0:14
25K
15.53 mi13:00:022:04:328:0120:27
8:26
+0:30
30K
18.64 mi13:28:502:33:208:1428:48
9:16
+0:50
20M
20.00 mi13:42:162:46:468:2013:26
9:53
+0:37
21M
21.00 mi13:54:442:59:148:3212:28
12:28
+2:35
35K
21.75 mi14:03:293:07:598:398:45
11:42
-0:46
23M
23.00 mi14:16:183:20:488:4412:49
10:14
-1:28
24M
24.00 mi14:25:373:30:078:459:19
9:19
-0:55
40K
24.85 mi14:33:263:37:568:467:49
9:09
-0:10
25.2M
25.20 mi14:36:503:41:208:473:24
9:52
+0:43
Finish
26.22 mi14:46:243:50:548:499:34
9:23
-0:29

Checkpoints & Pacing

📈Pace Line

Pace Progression

Track your pace changes throughout the race. Dot colors mark your quickest to easiest segments, relative to your own pace.

Fastest Pace

7:47 /mi

Average Pace

8:49 /mi

Slowest Pace

12:28 /mi

Loading chart...
Fastest
Middle
Slowest
Average

📊Segments

Segment Time Comparison

Time at Faster Pace

2:04:32

54% of race

Time at Steady Pace

1:12:20

31% of race

Time at Slower Pace

34:02

15% of race

Average Pace: 8:48 /mi

Loading chart...
Faster pace (< avg)
Steady pace (≈ avg)
Slower pace (> avg)

🎨Heatmap

Pace Heatmap

Where you sped up and eased off relative to your own pace across the race. Colors are relative to your own range, not to other runners.

Loading...
0mi6.6mi13.1mi19.7mi26.2mi
Pace:
Faster
Steady
Slower

Click or hover over segments to see details

✨Sparklines

Checkpoint Splits with Pace Trends

Overall Pace Trend

CheckpointDistanceTime of DayTimeAvg PaceSegmentPaceTrendRank
5K
3.11 mi11:20:1824:487:5924:48
7:59
#16437
10K
6.21 mi11:44:3049:007:5324:12
7:47
#15532
15K
9.32 mi12:08:491:13:197:5224:19
7:50
#15213
20K
12.43 mi12:34:101:38:407:5625:21
8:10
#15445
Half
13.11 mi12:39:351:44:057:565:25
7:56
#15442
25K
15.53 mi13:00:022:04:328:0120:27
8:26
#15686
30K
18.64 mi13:28:502:33:208:1428:48
9:16
#16377
20M
20.00 mi13:42:162:46:468:2013:26
9:53
#16751
21M
21.00 mi13:54:442:59:148:3212:28
12:28
#17584
35K
21.75 mi14:03:293:07:598:398:45
11:42
#18193
23M
23.00 mi14:16:183:20:488:4412:49
10:14
#18459
24M
24.00 mi14:25:373:30:078:459:19
9:19
#18490
40K
24.85 mi14:33:263:37:568:467:49
9:09
#18419
25.2M
25.20 mi14:36:503:41:208:473:24
9:52
#18384
Finish
26.22 mi14:46:243:50:548:499:34
9:23
#18523
Faster pace
Steady pace
Slower pace

Checkpoint and Segment Rankings

CheckpointDistanceSeg. DistOverallMalesM50-54Seg. OverallSeg. MalesSeg. M50-54
5K3.11 mi3.11 mi16437109841098414603(Top 51%)10202(Top 63%)10202(Top 511%)
10K6.21 mi3.10 mi15532+90510631+35310631+35314697(Top 52%)10298(Top 64%)10298(Top 516%)
15K9.32 mi3.11 mi15213+31910486+14510486+14514603(Top 51%)10202(Top 63%)10202(Top 511%)
20K12.43 mi3.11 mi15445-23210572-8610572-8616040(Top 56%)10762(Top 67%)10762(Top 539%)
Half13.11 mi0.68 mi15442+310564+810564+815412(Top 54%)10549(Top 66%)10549(Top 529%)
25K15.53 mi2.42 mi15686-24410653-8910653-8916778(Top 59%)11006(Top 68%)11006(Top 551%)
30K18.64 mi3.11 mi16377-69110871-21810871-21818972(Top 67%)11821(Top 73%)11821(Top 592%)
20M20.00 mi1.36 mi16751-37411015-14411015-14420553(Top 72%)12383(Top 77%)12383(Top 620%)
21M21.00 mi1.00 mi17584-83311324-30911324-30924351(Top 86%)14079(Top 87%)14079(Top 705%)
35K21.75 mi0.75 mi18193-60911572-24811572-24825397(Top 89%)14532(Top 90%)14532(Top 728%)
23M23.00 mi1.25 mi18459-26611667-9511667-9521233(Top 75%)12504(Top 78%)12504(Top 626%)
24M24.00 mi1.00 mi18490-3111652+1511652+1518872(Top 66%)11345(Top 70%)11345(Top 568%)
40K24.85 mi0.85 mi18419+7111593+5911593+5917075(Top 60%)10416(Top 65%)10416(Top 522%)
25.2M25.20 mi0.35 mi18384+3511566+2711566+2716360(Top 58%)10070(Top 63%)10070(Top 505%)
Finish26.22 mi1.02 mi18523-13911610-4411610-4420728(Top 73%)12155(Top 75%)12155(Top 609%)

Segment Performance Analysis

10K→15K

0.0 - 3.1 mi

Top 51%
×21story building
+97ft-345ft

Overall

14603

Males

10202

M50-54

10202

5K→10K

3.1 - 6.2 mi

Top 52%
×5story building
+79ft-138ft

Overall

14697

Males

10298

M50-54

10298

10K→15K

6.2 - 9.3 mi

Top 51%
×3story building
+67ft-78ft

Overall

14603

Males

10202

M50-54

10202

15K→20K

9.3 - 12.4 mi

Top 56%
×5story building
+106ft-86ft

Overall

16040

Males

10762

M50-54

10762

20K→Half

12.4 - 13.1 mi

Top 54%
×2story building
+19ft-37ft

Overall

15412

Males

10549

M50-54

10549

Half→25K

13.1 - 15.5 mi

Top 59%
×4story building
+66ft-88ft

Overall

16778

Males

11006

M50-54

11006

25K→30K

15.5 - 18.6 mi

Top 67%
×9story building
+181ft-148ft

Overall

18972

Males

11821

M50-54

11821

30K→20M

18.6 - 20.0 mi

Top 72%
×5story building
+64ft-50ft

Overall

20553

Males

12383

M50-54

12383

20M→21M

20.0 - 21.0 mi

Top 86%
×8story building
+106ft-24ft

Overall

24351

Males

14079

M50-54

14079

21M→35K

21.0 - 21.8 mi

Top 89%
×7story building
+17ft-86ft

Overall

25397

Males

14532

M50-54

14532

35K→23M

21.8 - 23.0 mi

Top 75%
×5story building
+23ft-63ft

Overall

21233

Males

12504

M50-54

12504

23M→24M

23.0 - 24.0 mi

Top 66%
×6story building
+12ft-82ft

Overall

18872

Males

11345

M50-54

11345

24M→40K

24.0 - 24.9 mi

Top 60%
×1story
+6ft-20ft

Overall

17075

Males

10416

M50-54

10416

40K→25.2M

24.9 - 25.2 mi

Top 58%
×1story
+13ft-16ft

Overall

16360

Males

10070

M50-54

10070

25.2M→Finish

25.2 - 26.2 mi

Top 73%
×2story building
+22ft-21ft

Overall

20728

Males

12155

M50-54

12155

Passing Analysis

Category:
Athletes Passed
2049
Passed By
4135
Net Change
-2086
SegmentAthletes PassedPassed ByNet ChangeStart RankEnd Rank
Start → 5K----#16437
5K → 10K96055+905#16437#15532
10K → 15K38061+319#15532#15213
15K → 20K136368-232#15213#15445
20K → Half3532+3#15445#15442
Half → 25K113357-244#15442#15686
25K → 30K78769-691#15686#16377
30K → 20M36410-374#16377#16751
20M → 21M18851-833#16751#17584
21M → 35K7616-609#17584#18193
35K → 23M49315-266#18193#18459
23M → 24M6596-31#18459#18490
24M → 40K10231+71#18490#18419
40K → 25.2M449+35#18419#18384
25.2M → Finish26165-139#18384#18523
TOTALS20494135-2086
📊

Passing Visuals

Category:
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🔄Passing Circle

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🌊Position Flow

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🏃Race Lanes

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Public Race Data

Boston Athletic Association

Boston Athletic Association

Mika Timing

Mika Timing